[linux-block.git] / net / ethtool / eee.c

// SPDX-License-Identifier: GPL-2.0-only

#include "netlink.h"
#include "common.h"
#include "bitset.h"

#define EEE_MODES_COUNT \
	(sizeof_field(struct ethtool_eee, supported) * BITS_PER_BYTE)

struct eee_req_info {
	struct ethnl_req_info		base;
};

struct eee_reply_data {
	struct ethnl_reply_data		base;
	struct ethtool_eee		eee;
};

#define EEE_REPDATA(__reply_base) \
	container_of(__reply_base, struct eee_reply_data, base)

const struct nla_policy ethnl_eee_get_policy[] = {
	[ETHTOOL_A_EEE_HEADER]		=
		NLA_POLICY_NESTED(ethnl_header_policy),
};

static int eee_prepare_data(const struct ethnl_req_info *req_base,
			    struct ethnl_reply_data *reply_base,
			    struct genl_info *info)
{
	struct eee_reply_data *data = EEE_REPDATA(reply_base);
	struct net_device *dev = reply_base->dev;
	int ret;

	if (!dev->ethtool_ops->get_eee)
		return -EOPNOTSUPP;
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		return ret;
	ret = dev->ethtool_ops->get_eee(dev, &data->eee);
	ethnl_ops_complete(dev);

	return ret;
}

static int eee_reply_size(const struct ethnl_req_info *req_base,
			  const struct ethnl_reply_data *reply_base)
{
	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	const struct eee_reply_data *data = EEE_REPDATA(reply_base);
	const struct ethtool_eee *eee = &data->eee;
	int len = 0;
	int ret;

	BUILD_BUG_ON(sizeof(eee->advertised) * BITS_PER_BYTE !=
		     EEE_MODES_COUNT);
	BUILD_BUG_ON(sizeof(eee->lp_advertised) * BITS_PER_BYTE !=
		     EEE_MODES_COUNT);

	/* MODES_OURS */
	ret = ethnl_bitset32_size(&eee->advertised, &eee->supported,
				  EEE_MODES_COUNT, link_mode_names, compact);
	if (ret < 0)
		return ret;
	len += ret;
	/* MODES_PEERS */
	ret = ethnl_bitset32_size(&eee->lp_advertised, NULL,
				  EEE_MODES_COUNT, link_mode_names, compact);
	if (ret < 0)
		return ret;
	len += ret;

	len += nla_total_size(sizeof(u8)) +	/* _EEE_ACTIVE */
	       nla_total_size(sizeof(u8)) +	/* _EEE_ENABLED */
	       nla_total_size(sizeof(u8)) +	/* _EEE_TX_LPI_ENABLED */
	       nla_total_size(sizeof(u32));	/* _EEE_TX_LPI_TIMER */

	return len;
}

static int eee_fill_reply(struct sk_buff *skb,
			  const struct ethnl_req_info *req_base,
			  const struct ethnl_reply_data *reply_base)
{
	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	const struct eee_reply_data *data = EEE_REPDATA(reply_base);
	const struct ethtool_eee *eee = &data->eee;
	int ret;

	ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_OURS,
				 &eee->advertised, &eee->supported,
				 EEE_MODES_COUNT, link_mode_names, compact);
	if (ret < 0)
		return ret;
	ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_PEER,
				 &eee->lp_advertised, NULL, EEE_MODES_COUNT,
				 link_mode_names, compact);
	if (ret < 0)
		return ret;

	if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, !!eee->eee_active) ||
	    nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, !!eee->eee_enabled) ||
	    nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED,
		       !!eee->tx_lpi_enabled) ||
	    nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer))
		return -EMSGSIZE;

	return 0;
}

const struct ethnl_request_ops ethnl_eee_request_ops = {
	.request_cmd		= ETHTOOL_MSG_EEE_GET,
	.reply_cmd		= ETHTOOL_MSG_EEE_GET_REPLY,
	.hdr_attr		= ETHTOOL_A_EEE_HEADER,
	.req_info_size		= sizeof(struct eee_req_info),
	.reply_data_size	= sizeof(struct eee_reply_data),

	.prepare_data		= eee_prepare_data,
	.reply_size		= eee_reply_size,
	.fill_reply		= eee_fill_reply,
};

/* EEE_SET */

const struct nla_policy ethnl_eee_set_policy[] = {
	[ETHTOOL_A_EEE_HEADER]		=
		NLA_POLICY_NESTED(ethnl_header_policy),
	[ETHTOOL_A_EEE_MODES_OURS]	= { .type = NLA_NESTED },
	[ETHTOOL_A_EEE_ENABLED]		= { .type = NLA_U8 },
	[ETHTOOL_A_EEE_TX_LPI_ENABLED]	= { .type = NLA_U8 },
	[ETHTOOL_A_EEE_TX_LPI_TIMER]	= { .type = NLA_U32 },
};

int ethnl_set_eee(struct sk_buff *skb, struct genl_info *info)
{
	struct ethnl_req_info req_info = {};
	struct nlattr **tb = info->attrs;
	const struct ethtool_ops *ops;
	struct ethtool_eee eee = {};
	struct net_device *dev;
	bool mod = false;
	int ret;

	ret = ethnl_parse_header_dev_get(&req_info,
					 tb[ETHTOOL_A_EEE_HEADER],
					 genl_info_net(info), info->extack,
					 true);
	if (ret < 0)
		return ret;
	dev = req_info.dev;
	ops = dev->ethtool_ops;
	ret = -EOPNOTSUPP;
	if (!ops->get_eee || !ops->set_eee)
		goto out_dev;

	rtnl_lock();
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		goto out_rtnl;
	ret = ops->get_eee(dev, &eee);
	if (ret < 0)
		goto out_ops;

	ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT,
				    tb[ETHTOOL_A_EEE_MODES_OURS],
				    link_mode_names, info->extack, &mod);
	if (ret < 0)
		goto out_ops;
	ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod);
	ethnl_update_bool32(&eee.tx_lpi_enabled,
			    tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod);
	ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER],
			 &mod);
	ret = 0;
	if (!mod)
		goto out_ops;

	ret = dev->ethtool_ops->set_eee(dev, &eee);
	if (ret < 0)
		goto out_ops;
	ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);

out_ops:
	ethnl_ops_complete(dev);
out_rtnl:
	rtnl_unlock();
out_dev:
	dev_put(dev);
	return ret;
}
Commit	Line	Data
b7eeefe7 MK	1	// SPDX-License-Identifier: GPL-2.0-only
	2
	3	#include "netlink.h"
	4	#include "common.h"
	5	#include "bitset.h"
	6
	7	#define EEE_MODES_COUNT \
	8	(sizeof_field(struct ethtool_eee, supported) * BITS_PER_BYTE)
	9
	10	struct eee_req_info {
	11	struct ethnl_req_info base;
	12	};
	13
	14	struct eee_reply_data {
	15	struct ethnl_reply_data base;
	16	struct ethtool_eee eee;
	17	};
	18
	19	#define EEE_REPDATA(__reply_base) \
	20	container_of(__reply_base, struct eee_reply_data, base)
	21
ff419afa	22	const struct nla_policy ethnl_eee_get_policy[] = {
329d9c33 JK	23	[ETHTOOL_A_EEE_HEADER] =
329d9c33 JK	24	NLA_POLICY_NESTED(ethnl_header_policy),
b7eeefe7 MK	25	};
	26
	27	static int eee_prepare_data(const struct ethnl_req_info *req_base,
	28	struct ethnl_reply_data *reply_base,
	29	struct genl_info *info)
	30	{
	31	struct eee_reply_data *data = EEE_REPDATA(reply_base);
	32	struct net_device *dev = reply_base->dev;
	33	int ret;
	34
	35	if (!dev->ethtool_ops->get_eee)
	36	return -EOPNOTSUPP;
	37	ret = ethnl_ops_begin(dev);
	38	if (ret < 0)
	39	return ret;
	40	ret = dev->ethtool_ops->get_eee(dev, &data->eee);
	41	ethnl_ops_complete(dev);
	42
	43	return ret;
	44	}
	45
	46	static int eee_reply_size(const struct ethnl_req_info *req_base,
	47	const struct ethnl_reply_data *reply_base)
	48	{
	49	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	50	const struct eee_reply_data *data = EEE_REPDATA(reply_base);
	51	const struct ethtool_eee *eee = &data->eee;
	52	int len = 0;
	53	int ret;
	54
	55	BUILD_BUG_ON(sizeof(eee->advertised) * BITS_PER_BYTE !=
	56	EEE_MODES_COUNT);
	57	BUILD_BUG_ON(sizeof(eee->lp_advertised) * BITS_PER_BYTE !=
	58	EEE_MODES_COUNT);
	59
	60	/* MODES_OURS */
	61	ret = ethnl_bitset32_size(&eee->advertised, &eee->supported,
	62	EEE_MODES_COUNT, link_mode_names, compact);
	63	if (ret < 0)
	64	return ret;
	65	len += ret;
	66	/* MODES_PEERS */
	67	ret = ethnl_bitset32_size(&eee->lp_advertised, NULL,
	68	EEE_MODES_COUNT, link_mode_names, compact);
	69	if (ret < 0)
	70	return ret;
	71	len += ret;
	72
	73	len += nla_total_size(sizeof(u8)) + /* _EEE_ACTIVE */
	74	nla_total_size(sizeof(u8)) + /* _EEE_ENABLED */
	75	nla_total_size(sizeof(u8)) + /* _EEE_TX_LPI_ENABLED */
	76	nla_total_size(sizeof(u32)); /* _EEE_TX_LPI_TIMER */
	77
	78	return len;
	79	}
	80
	81	static int eee_fill_reply(struct sk_buff *skb,
	82	const struct ethnl_req_info *req_base,
	83	const struct ethnl_reply_data *reply_base)
	84	{
	85	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	86	const struct eee_reply_data *data = EEE_REPDATA(reply_base);
	87	const struct ethtool_eee *eee = &data->eee;
	88	int ret;
89
90	ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_OURS,
91	&eee->advertised, &eee->supported,
92	EEE_MODES_COUNT, link_mode_names, compact);
93	if (ret < 0)
94	return ret;
95	ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_PEER,
96	&eee->lp_advertised, NULL, EEE_MODES_COUNT,
97	link_mode_names, compact);
98	if (ret < 0)
99	return ret;
100
101	if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, !!eee->eee_active) \|\|
102	nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, !!eee->eee_enabled) \|\|
103	nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED,
104	!!eee->tx_lpi_enabled) \|\|
105	nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer))
106	return -EMSGSIZE;
107
108	return 0;
109	}
110
111	const struct ethnl_request_ops ethnl_eee_request_ops = {
112	.request_cmd = ETHTOOL_MSG_EEE_GET,
113	.reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY,
114	.hdr_attr = ETHTOOL_A_EEE_HEADER,
b7eeefe7 MK	115	.req_info_size = sizeof(struct eee_req_info),
b7eeefe7 MK	116	.reply_data_size = sizeof(struct eee_reply_data),
b7eeefe7 MK	117
	118	.prepare_data = eee_prepare_data,
	119	.reply_size = eee_reply_size,
	120	.fill_reply = eee_fill_reply,
	121	};
fd77be7b MK	122
	123	/* EEE_SET */
	124
ff419afa	125	const struct nla_policy ethnl_eee_set_policy[] = {
329d9c33 JK	126	[ETHTOOL_A_EEE_HEADER] =
329d9c33 JK	127	NLA_POLICY_NESTED(ethnl_header_policy),
fd77be7b	128	[ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED },
fd77be7b MK	129	[ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 },
	130	[ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 },
	131	[ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 },
	132	};
	133
	134	int ethnl_set_eee(struct sk_buff skb, struct genl_info info)
	135	{
fd77be7b	136	struct ethnl_req_info req_info = {};
5028588b	137	struct nlattr **tb = info->attrs;
fd77be7b	138	const struct ethtool_ops *ops;
5028588b	139	struct ethtool_eee eee = {};
fd77be7b MK	140	struct net_device *dev;
	141	bool mod = false;
	142	int ret;
	143
fd77be7b MK	144	ret = ethnl_parse_header_dev_get(&req_info,
	145	tb[ETHTOOL_A_EEE_HEADER],
	146	genl_info_net(info), info->extack,
	147	true);
	148	if (ret < 0)
	149	return ret;
	150	dev = req_info.dev;
	151	ops = dev->ethtool_ops;
	152	ret = -EOPNOTSUPP;
	153	if (!ops->get_eee \|\| !ops->set_eee)
	154	goto out_dev;
	155
	156	rtnl_lock();
	157	ret = ethnl_ops_begin(dev);
	158	if (ret < 0)
	159	goto out_rtnl;
	160	ret = ops->get_eee(dev, &eee);
	161	if (ret < 0)
	162	goto out_ops;
	163
	164	ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT,
	165	tb[ETHTOOL_A_EEE_MODES_OURS],
	166	link_mode_names, info->extack, &mod);
	167	if (ret < 0)
	168	goto out_ops;
	169	ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod);
	170	ethnl_update_bool32(&eee.tx_lpi_enabled,
	171	tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod);
63cf3238 WVK	172	ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER],
63cf3238 WVK	173	&mod);
fd77be7b MK	174	ret = 0;
	175	if (!mod)
	176	goto out_ops;
	177
	178	ret = dev->ethtool_ops->set_eee(dev, &eee);
6c5bc8fe MK	179	if (ret < 0)
	180	goto out_ops;
	181	ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
fd77be7b MK	182
	183	out_ops:
	184	ethnl_ops_complete(dev);
	185	out_rtnl:
	186	rtnl_unlock();
	187	out_dev:
	188	dev_put(dev);
	189	return ret;
	190	}